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FUNCTIONS Section 3.1

FUNCTIONS Section 3.1. RELATIONS. Definition : A relation is a correspondence between two sets. If x and y are two elements in these sets and if a relation exists between x → y , then we say that “x” correspond to “ y” or that “y” depends on “x”.

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Measurement

Measurement. Why do we need measurement? We need to measure the concepts in our hypotheses. When we measure those concepts, they become variables. Measurement is important for collecting data. So measurement comes before data collection. What is measurement?

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The Scientific Method

The Scientific Method. There is simply no fixed set of steps that scientists always follow, no one path that leads them unerringly to scientific knowledge. “The Scientific Method”. Question or Problem 2) Hypothesize Predict Consequences 4) Experiment 5) Interpret Experimental Results.

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